The intelligent station/branch identifier is a professional instrument used by the power supply system to distinguish the phases and attributes of electric energy meters. In order to achieve the goal of refined management and loss reduction of the station area, the electric power management department needs to use the station area identification instrument to find out the user's station area and relative attributes, and accurately and quickly find out all kinds of station areas (especially the line Complicated user data with adjacent cross stations, multiple interference sources, severe interference, and incomplete data) greatly improve the accuracy of user data, and can also greatly reduce the workload and labor intensity of grassroots personnel. The station area identification instrument provides a true and accurate data basis for it, ensures accurate identification within the entire station area, and improves the station area management methods of the electricity management department.
The intelligent station zone/branch recognition instrument includes two parts: the host and the handheld terminal. The FSK power carrier communication method is adopted between the host and the handheld terminal. During operation, the host is installed on the low-voltage outlet terminal of the transformer to be tested, and the operator uses a handheld terminal to test at the inlet of the user to be tested. This equipment can carry out data transmission in pole-type and box-type, ground and underground lines, and will not be affected in the case of adjacent transformers sharing high voltage and common ground, thus ensuring the reliability of the detection results, which is very suitable The crossover of transformers of different specifications and models in multiple zones. Even under complex underground power cable conditions, it can still be reliably detected without interruption.
1. The test section of the station area
Communication method: special power frequency load communication, distance: ≥5km
Pulse current test distance: ≥5km
Recognition cycle: ≤6 seconds
Test success rate: 100%
Number of branch identification: single host 3 channels (multi-host mode can expand 18 channels)
Clamp-type current transformer: 50mm (50A/100A/250A/500A)
250A/1250A flexible current clamp (optional)
2. Electrical parameter measurement part
Voltage: ±0.2% Current: ±0.5%
Power: ±0.5% Frequency: ±0.02Hz
Phase: ±0.2°
3. Power quality part
Voltage harmonic measurement times: 2－51
Current harmonic measurement times: 2－51
Harmonic voltage content rate measurement error: ≤0.1%
Harmonic current content rate measurement error: ≤0.2%
4. Working environment
Working environment temperature: -30℃~70℃
Working environment humidity: ≤95%RH
Working voltage: AC220V±10%
5. Insulation
⑴ The insulation resistance of the voltage and current input terminals to the chassis is ≥100MΩ.
⑵, the working frequency 1.5KV (effective value) between the input end of the working power supply and the shell, the experiment lasted 1 minute.
6. Weight
Host: 2.6Kg
Extension: 1Kg
7. Volume
Host: 32cm×24cm×13cm
Extension: 25cm×16cm×6cm
1 Compatible with the functions of the traditional carrier zone identification device.
2 The carrier communication test has a longer transmission distance.
3 Strong anti-interference: the current transformer with high-sensitivity Permalloy iron core can automatically change the magnification in the full range, which can overcome the interference of high-frequency harmonic currents with different strengths in the test site.
4 The method of using the extension to send the pulse current can facilitate the branch (switch) judgment, and the originality can distinguish up to 12 line branches at the same time according to the user's requirements, and the branch and phase can be distinguished at the same time when the station area is recognized.
5 Any transformer station area number can be set to determine which transformer it is.
6 Flexible detection methods, power carrier, carrier wave and pulse current integration, and pulse current three methods, users can freely switch according to the needs of the site.
7 The extension voltage input has a 380V voltage automatic protection function to avoid the possibility that the user can easily add to the phase line to burn the detection extension during the test.
8 The test results can be statistically analyzed to indicate the load status of each phase of the transformer.
9 Can display and save the total harmonics of the test circuit.
10 It can display the voltage waveform of the test circuit.
11 With storage function, it can store 30000 operation data, and can be transferred to the background computer for management.
12 The main and extension units are powered by on-site power supply, no other additional power supply is needed.
13 Large screen, high-brightness LCD, full Chinese display, Chinese characters prompting the test process and results, rubber buttons, easier operation.
Mobile version
15388193573
